Multiple choice More dew is formed on grass than on a metallic utensil because there is transpiration in plants grass attracts dew drops on account of photosynthesis grass being good radiator, enables water vapour in the air to condense on it grass is a good conductor Reveal answer Fill a bubble to check yourself C Correct answer Explanation Grass is a good radiator of heat, meaning it loses heat quickly at night. This causes its temperature to drop below the dew point of the surrounding air, leading to condensation, whereas metals are generally poor radiators.